sure emulators are fast but so what? their gonna port to an emulator?
You don't have to "port" Amiga software to an emulator or write software "for" an emulator. All you have to do is release an AOS3/m68k version of your software. That will automatically run everywhere: on Amigas, on Pegasos, on AmigaOne, on UAE, on Amithlon. With exception of classic Amigas, these platforms are about equally fast, with the x86-based emulators leading the pack. And don't forget that, while the game's m68k core would run under an emulator, OS functions called by the game, at least to some degree, run native. For example, WinUAE utilizes DirectX and the Windows file system. That very much limits the performance impact of emulation.
Does it take a rocket scientist to release a AOS3/m68k version ? I don't know. If the game is written in C and mostly self-contained, without Morphos dependencies, the porting effort might be minimal (as in hours). What's the alternative ? Target a niche audience and say goodbye to sales ?!